Grade checklist item with ✔ and ✘ (1)

It would be nice to distinguish checklist items that don’t hold from items that I still have to do. Currently there is no difference, and while grading or after having been distracted I have to check such items again to see whether they hold.

A solution would be to give each checklist item two mutually exclusive buttons: a ✔ for when it holds and ✘ for when it doesn’t hold. Items that I still have to do have neither of the buttons checked. As long as any of the items are left unchecked, I shouldn’t be able to mark the assignment as Graded.